What exactly do you mean?
Do you mean that you can't physically remove the SIM from one phone and install it in another?
If not then why not?
Or is the problem something else?
What exactly are you trying to do, what exact steps are you taking to do it, what happens/goes wrong, any error messages, etc.?
Please described your issue in as much detail as possible so that others can offer useful feedback.
If you need to contact 48 support about this then see the links in my signature below.
